AI Speech Recognition
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Transcript of AI Speech Recognition
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Artificial intelligence SpeechRecognition System
presented by:D.PRAVALIKA
06N61A0472
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Contents:
Introduction
Technology
Terms and concepts
Block diagram of the system
Factors to be considered
Recent improvements
Current software options
Future of SR
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Introduction:
What is Speech recognition :
It is asoftware that allows the user to have
their spoken words to written text.It is
speaker independent.Voice Recognition
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Speech Recognition is speakerindependent.
Voice Recognition is speakerdependent.
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Types of speech recognition
Continuous speech
- dictation Discrete speech
- system controls
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What is AI?
What is artificialintelligence?
-Defined as, The study of
intelligent behavior and theto find ways in which suchbehavior could beengineered in any type of
artifact.
-Basically, putting humanintelligence into a machine
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Terms and concepts
Utterances
Pronounciations Accuracy
Grammers
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Speech recognition process
applications
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Microphone
NLP
display
i/pto
robots
Voice i/p
Commandstocomputers
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Microphone
BPF
BPF
BPF
BPF
ADC
ADC
ADC
ADC
Input
ckts
Diditised
speech
Templates
Output
cktsCPU
Amplifier
with AGC
RAM
Speaker independent process
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Factors to be considered
Time
Technology
Voice training
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Voice Training
Can be done by:
Predetermined text segments
Individual words
Compare new acoustic with old and combines
More training = better recognition
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Recent Improvements in SR
Faster training ~10 min.
Better recognition ~95% More compatible software
Better system control/command
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Current Software Options for PC
Dragon SystemsNaturally Speaking
PhilipsFreeSpeech
IBMViaVoice
Lernout & HauspieVoice Xpress
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How well do the work?
Training Dictation
Correct.
App.
Integrat.
Command
- Control
Dragon Excellent Excellent Good Good
Philips Fair Fair Good Good
IBM Excellent Good Good Excellent
L & H Good Good Good Good
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Future of SR
SUISpeech-based User Interface
Improvements needed:
- Greater accuracy
- Greater system control/command
- More compatible software
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Applications
Dictations
Commercial/Industrial Applications
Hand Held Digital Recorders
Air lines and hotel reservations
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Conclusion
It is important to consider the
environment.since it plays major
role.
The quality of speech recognisation
depends on environment
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References
1. Alwang, Greg. Speech Recognition, PC Magazine, December 1
1999
2. Hauptmann, Alexander G. Jang, Photina Jaeyun. Carnegie Mellon
University. Learning to Recognize Speech by Watching Television,IEEE Intelligent Systems, September/October 1999.
3. Miastkowski, Stan. Latest Speech Software Gets You Up and
Running Faster, PC World, November 1999.
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Thank you